HOW TO CHANGE QTY IN BOM

I have a weldment cutlist table in a drawing that is tabulated.  The part is configured such that one item's qty is called out in the table under column C.  How can I change the qty cell of the weldment cutlist table to just type the letter C?  I know I can edit the description and part number columns by double clicking in them and breaking the link, but this doesn't work for the QTY column.

SolidworksBill Of Materials